CN202171644U - Portable civil imaging monitoring radar and radar system - Google Patents
Portable civil imaging monitoring radar and radar system Download PDFInfo
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- CN202171644U CN202171644U CN2011202121996U CN201120212199U CN202171644U CN 202171644 U CN202171644 U CN 202171644U CN 2011202121996 U CN2011202121996 U CN 2011202121996U CN 201120212199 U CN201120212199 U CN 201120212199U CN 202171644 U CN202171644 U CN 202171644U
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Abstract
The utility model discloses a portable civil imaging monitoring radar and a radar system. The monitoring radar comprises a radar front end, a driving holder and a power supply assembly, wherein the power supply assembly is electrically connected with the radar front end and the driving holder, the driving holder supports the radar front end and drives the radar front end to rotate, the radar front end comprises an antenna, a frequency synthesizer, a receiver, a transmitter, a signal processor and a front end controller, the frequency synthesizer generates radar emission waveforms, the transmitter amplifies the radar emission waveforms, the amplified radar emission waveforms are sent by the antenna, the antenna receives radar echoes reflected by an object and sends the radar echoes to the receiver for frequency mixing amplification, the receiver sends the amplified signals to the signal processor for processing and imaging, and the front end controller is connected with and controls the antenna, the frequency synthesizer, the receiver, the transmitter and the signal processor. The radar system comprises a monitoring radar and a radar terminal connected with the radar. The radar of the utility model is small in size and low in cost. With object searching and object imaging functions, the radar is wide in application.
Description
Technical field
The utility model is mainly used in the microwave sounding technical field, relates in particular to a kind of portable imaging monitoring radar.See that from use angle the product that the utility model forms will be used widely in occasions such as security, intelligent traffic administration system, sea (water surface) search and rescue.
Background technology
Radar is as a kind of military equipment, from all being the main means of battle reconnaissance after World War II so far.But along with the develop rapidly of microelectric technique, computer technology, signal processing technology and Radar Technology, the miniradar of compact conformation, function admirable, relative low price moves towards the commercial market from military field gradually.
At present, the developing direction of field of radar has two outstanding characteristics: the one, develop towards high-performance, remote Large Radar direction, and be mainly used in military domain; Another then is towards miniaturization, develops to the direction of specific use, is primarily aimed at the commercial market.For the commercial market, price is low, be greatly its characteristics of demand in batches, but uses to concrete, and needed field of radar state-of-the-art technology still is used.
Commerical radar has used quite general at present, like navar, airport navar, weather radar, the spy ground Rescue Radar of measuring vehicle speed radar and radar for backing car, civilian ship, or the like.Current, automobile collision avoidance radar, GPR, detection radar through walls, environment monitoring radar are still the research and development focus in commerical radar field.
Current, advanced radar imagery technology has begun in the commercial market to use.U.S. Transportation Security Administration has showed the airport security equipment of the advanced imaging technique of two employing in Washington the year ends 2009.This two equipment can scan ensconces the passenger's metal on one's body or the dangerous material of non-metal kind.This is a millimeter-wave technology that utilizes, and presents the rays safety detection apparatus of computer image behind the scanning human body.
We can say that advanced radar imagery technology is beginning to move towards normal domestic market.
The radar imagery technique functions comes from synthetic aperture microwave imaging radar (SAR), and it has the ability of round-the-clock, round-the-clock and remote high-resolution imaging.Compare with infrared imagery technique with traditional optical, it does not receive the influence of external environment conditions such as rain, mist and cigarette, has comprised meticulous, abundant target information in its image.Now; Its deriving technology is numerous, like band High Resolution SAR imaging technique, pack High Resolution SAR imaging technique, slip pack High Resolution SAR imaging technique, Ship Target ISAR imaging technique, air mobile target ISAR imaging technique, extraterrestrial target ISAR imaging technique, polarization SAR/ISAR imaging technique, SAR-GMTI moving target detection technique, SCANSAR-GMTI wide area moving target detection technique, interference D S AR/ISAR imaging technique and spin target detection technique etc.These technology are reconnoitred on the territory and the forest reserves, supervision, crops assessment and military field ecological and disaster assessment, environmental monitoring, ocean stereo mapping, wave or sea ice monitoring, harbour or air traffic supervision, illegal fishing or smuggling have very important application prospect.
But existing be used to monitor, the imaging radar of tracking target, its complex structure costs an arm and a leg, complicated operation can't be promoted in fields such as ground or surface-searches on a large scale.
Summary of the invention
The fundamental purpose of the utility model is to monitor radar for applications such as security and intelligent transportation provide a kind of small-sized imaging with low cost, that cost performance is high.
The technical scheme of the utility model is: a kind of portable civilian imaging monitoring radar; Comprise radar front end, drive The Cloud Terrace and power supply module; Power supply module is electrically connected with radar front end and driving The Cloud Terrace; Drive The Cloud Terrace and support radar front end and drive the radar front end rotation, said radar front end comprises antenna, frequency synthesizer, receiver, transmitter, signal processor and front controller, and frequency synthesizer produces the radar emission waveform; The radar emission waveform that transmitter produces frequency synthesizer amplifies the back and is gone out by antenna transmission; The radar return of antenna receiving target reflection also sends to receiver and carries out mixing and amplify, and receiver is sent to signal processor with amplifying signal and handles and form images; Front controller connects and control antenna, frequency synthesizer, meet sb. at the airport, transmitter and signal processor.
Said antenna is the waveguide leaky antenna.
Said waveguide leaky antenna comprises emitting antenna, receiving antenna and frame, and emitting antenna and receiving antenna are separately fixed on the frame.
Said frequency synthesizer is the frequency synthesizer of emission linear frequency modulation continuous wave.
Said transmitter is that emissive power is the solid state transmitter of 10mW～3W.
Said receiver comprises that low noise amplifier, frequency mixer, property filter, frequency are windowed and extracts circuit, broad band amplifier and narrow-band amplifier.Low noise amplifier amplifies the radar echo signal that antenna receives; Send into frequency mixer after the amplification and carry out mixing; Mixed frequency signal gets into property filter and filters clutter; Frequency is windowed and is extracted narrowband intermediate frequency signal and the Wideband Intermediate Frequency signal after the circuit extraction mixing, respectively by flowing to signal processor after narrow-band amplifier and the broad band amplifier amplification.
Said frequency mixer adopts the zero intermediate frequency scheme, and its circuit design is a prior art, but the high reject signal that produces during the filtering mixing can also guarantee the requirement of radar detection blind area simultaneously.
Said signal processor comprises two-way mould/number conversion module and digital signal processing module; Two-way mould/number conversion module receives signal that broad band amplifier and narrow-band amplifier carry respectively and is digital signal with conversion of signals, and digital signal processing module detects, locatees and follow the tracks of moving target according to digital signal and selected target is carried out imaging processing.
Said digital signal processing module comprises a polylith DSP and a FPGA, and polylith DSP (Digital Signal Processor) connects FPGA (Field-Programmable Gate Array) respectively.Computation process is carried out parallel processing, to satisfy the complicated calculations requirement of real-time detection and imaging process.
Said power supply module comprises electric battery and transit cable, and electric battery is electrically connected with transit cable, and transit cable is electrically connected with radar front end and driving The Cloud Terrace.
Said monitoring radar also comprises tripod, drives The Cloud Terrace and places on the tripod, and radar front end places and drives on the The Cloud Terrace.
The utility model also provides a kind of radar system, comprises monitoring radar and radar terminal, and the monitoring radar is connected through the LAN cable with radar terminal, radar terminal control monitoring radar.The monitoring radar comprises above-mentioned parts.
Said radar terminal is a computing machine.
Has monitoring radar control module in the said computing machine.This module provides the radar man-machine interface, realizes operator controlling radar.
The beneficial effect of the utility model:
The hardware configuration of the utility model is effectively simplified, and its volume is little, and cost is relatively low, is widely used, and extraordinary application prospect is especially arranged aspect target search:
1) radar of the utility model adopts the continuous wave system, simplifies hardware configuration, and cost is reduced.Compare with pulse system radar, the hardware circuit of continuous wave system radar is much simple relatively.Concerning detection range at 30Km with interior closely application, adopt the continuous wave system can satisfy request for utilization.
2) frequency synthesizer adopts DDS sawtooth wave linear frequency modulation scheme, simplifies the frequency synthesizer design.
3) adopt the solid state transmitter scheme, emissive power is easy to realize below 3W.
4) receiver adopts zero intermediate frequency frequency conversion scheme, simplified receiver hardware.Simultaneously, in receiver, adopt the frequency windowing technology, handle separately, guaranteed the signal to noise ratio (S/N ratio) and the signal quality of imaging region signal, for further signal Processing is laid a solid foundation to be extracted into as regional signal.
5) on the overall plan, Ben Leida adopts narrow band mode work, and search ground (water surface) moving target can be realized that the detection of target is found, locate and follow the tracks of.In case find interested target, can manual switching arrive broadband mode work, obtain the wide-band-message of target in real time, through special signal processing algorithm, just can obtain the one dimension picture or the two-dimensional image of target.Therefore, DDS adopts arrowband and the work of WBFM pattern, switches through the radar terminal man-machine interface; Receiver also adopts binary channels work, and the intermediate frequency output of wide, narrow two passages can be provided.
6) signal processor adopts the DSP+FPGA design, realizes multi-disc DSP parallel processing, and the big data quantity that needs with the completion imaging data calculates in real time.
7) signal processing algorithm utilizes transmit information and two-dimensional fft technique, CFAR detection technology of sawtooth wave frequency modulation to accomplish motion target detection; Realize tracking through the Kalman Forecasting Methodology to target; Separate the high-resolution imaging of line frequency conditioning technology and imaging algorithm realization target through wideband pulse compress technique, orientation.
8) radar terminal adopts the universal portable computing machine, is connected with radar front end through LAN interface, can realize the remote control to radar, the convenient application.Terminal software is developed on windows platform, is embedded into easily in other supervisory system to work, the convenient interlock that realizes radar and other supervisory system.
9) radar structurally is integrated together antenna, frequency synthesizer, receiver, transmitter, signal processor, forms radar front end, supports by driving The Cloud Terrace.Radar adopts the mechanical scanning scheme to drive, and has simplified the scanning tracker, has reduced cost.
The utility model has adopted the ISAR imaging technique, is integrated in one environment monitoring radar and radar broadband imaging technique, is a kind of small-scale terrestrial that is convenient for carrying (sea) search, tracking and microwave imaging detection radar.It can to ground moving object detect, follow the tracks of and one, two-dimentional high-resolution imaging, the place that department easy to use is round-the-clock, round-the-clock and remote monitoring are concerned about is for use department provides accurate target information.The ship of the personnel that its main monitoring objective is a ground motion, vehicle, the water surface and sea motion etc.
For reducing cost, Ben Leida has adopted the continuous wave system, has simplified hardware configuration, has reduced the radar cost; For guaranteeing the radar imagery performance, adopted windowing technology at receiving loop, guarantee the signal to noise ratio (S/N ratio) and the signal quality of the echo signal that imaging process needs; On signal Processing, adopt simultaneously and understand line conditioning technology frequently, both simplified hardware circuit, guaranteed imaging performance again.These measures; Make that the utility model radar has that volume is little, in light weight, easy operating, dependable performance and set up advantages such as simple; On ground, the water surface (sea) searches and rescues, harbor traffic management, anti-smuggling; In the oil field, the security monitoring in strategic point such as airport, large-scale goods yard, large-scale dam, petroleum pipeline, in fields such as ecological protection, anti-terrorisms boundless application prospect is arranged.
Description of drawings
Fig. 1 is the portable imaging monitoring radar system structural representation of the utility model;
Fig. 2 is the portable imaging monitoring radar general principles figure of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Referring to Fig. 1; The portable civilian imaging of the utility model detects radar system and comprises monitoring radar and radar terminal 1; Radar terminal 1 connects through LAN cable 6 and control monitoring radar; LAN cable 6 length can reach 100 meters, and are farther like need, then can on LAN cable 6 interfaces, get final product by the adjunction fiber optic.The monitoring radar comprises radar front end 2, drives The Cloud Terrace 3, consumer unit 4 and tripod 5, and radar front end 2 places and drives on the The Cloud Terrace 3, drives The Cloud Terrace 3 support radar front ends 2 and drive radar front end 2 to rotate.Drive The Cloud Terrace 3 and can place on the tripod 5, be used to support radar front end 2, consumer unit 4 is connected with driving The Cloud Terrace 3 cables with radar front end 2 and is radar front end 2 and 3 power supplies of driving The Cloud Terrace.Consumer unit 4 is a power supply module, comprises electric battery and transit cable.Can also install optical observation hole 8 additional on the radar front end 2.
Radar terminal 1 is actually a portable computer, has monitoring radar control module.This module provides the radar man-machine interface, realizes operator controlling radar.
Fig. 2 is the general principles figure of the portable imaging monitoring radar of the utility model.Show among Fig. 2 that Ben Leida is made up of radar front end 2 (in the frame of broken lines), tripod 5, consumer unit 4, driving The Cloud Terrace 3.Wherein, tripod 5 is used to support radar front end 2, and consumer unit 4 is used for radar front end 2 and 3 power supplies of driving The Cloud Terrace.
The overwhelming majority work of radar is accomplished by radar front end 2.Radar front end 2 comprises antenna, frequency synthesizer, receiver, transmitter, signal processor and front controller, and frequency synthesizer produces the radar work wave, provides coherent to transmit to transmitter, to receiver the benchmark local oscillation signal is provided; The radar wave that transmitter produces frequency synthesizer amplifies the back is gone out by antenna transmission, sends to receiver behind the antenna receiving radar echo and amplifies, and receiver is sent to signal processor with amplifying signal and handles and form images; Front controller connects and control antenna, frequency synthesizer, receiver, transmitter and signal processor.
It is following that radar front end 2 is respectively formed the function description of module:
Antenna
Adopt the waveguide leaky antenna, emitting antenna and receiving antenna split, and are installed in jointly on the frame.Antenna gain >=27dB, the insulated degree requirement＞60dB between emitting antenna and receiving antenna, secondary lobe＜25dB.
Transmitter
Adopt solid state transmitter, emissive power is adjustable between 10mW～3W.
Frequency synthesizer
Linear frequency modulation continuous wave is adopted in radar work, is produced by the DDS in the frequency synthesizer.Frequency synthesizer is the radar core work, and it produces the radar work wave, to transmitter the transmitted reference signal is provided, and to receiver the coherent local oscillation signal is provided, and to receiver, signal processor sampled signal is provided, synchronizing signal.
Receiver
As shown in Figure 2, receiver is windowed by low noise amplifier, frequency mixer, property filter, frequency and is extracted circuit, broad band amplifier and narrow-band amplifier and form.Wherein, low noise amplifier is the prime amplifier before the mixing, and its noise figure is answered＜1dB, gain >=25dB, and it is most important to the signal to noise ratio (S/N ratio) that guarantees receiving loop; The zero intermediate frequency scheme is adopted in frequency mixer mixing and intermediate frequency amplification, and circuit structure is simple, after mixing, needs to adopt characteristic filtering, influences with the near-end of eliminating land clutter, and the strong zero-frequency disturbing effect during simultaneously also mixing is reduced to minimum.This radar is an imaging detection radar; Possesses simultaneously common detection radar function again; The intermediate frequency of receiver has two passage outputs simultaneously, and its narrow band channel provides the intermediate-freuqncy signal of common detection radar, and its broadband channel provides imaging radar required Wideband Intermediate Frequency signal.The extraction of these two channel signals is windowed by frequency and is extracted the circuit completion.What is called is windowed, and promptly is in the intermediate-freuqncy signal after the mixing of the receiver first order, extracts wherein a certain section frequency spectrum and carries out individual processing, amplification through the frequency way of windowing, and improves the signal to noise ratio (S/N ratio) of this section frequency spectrum, for follow-up signal Processing provides high-quality signal.Frequency is windowed and is extracted circuit extraction correspondent frequency signal and carry to signal processor through broad band amplifier and narrow-band amplifier respectively.
Signal processor
Among Fig. 2, signal processor is made up of two-way A/D and digital signal processing module.The analog intermediate frequency output of receiver converts the pure digi-tal signal into after the A/D conversion; Calculating afterwards and processing and storage are transferred to digital signal processing module and are accomplished owing to the calculated amount of signal Processing is very big, and the calculated amount when particularly carrying out imaging processing must adopt many CPU parallel processing could accomplish in real time and calculate; Therefore; Signal processing module takes many DSP to add FPGA design on hardware, and many DSP are connected with FPGA respectively, to guarantee the processing speed of this part circuit.
Digital signal processing module the calculation module mainly divide narrow band signal to handle and The Wideband Signal Processing two parts.Narrow band signal is handled main the completion motion target detection is found, located and follows the tracks of, and The Wideband Signal Processing is mainly accomplished the imaging processing to selected target, obtains a peacekeeping two-dimensional image of target, is convenient to identification of targets.Narrow band signal is handled and is adopted two-dimensional fft technique and CFAR detection technology to accomplish the detection to the low-speed motion target; Realize tracking through the Kalman Forecasting Methodology to target.The Wideband Signal Processing is separated the line high-resolution imaging of conditioning technology, imaging algorithm realization target frequently through wideband pulse compress technique and orientation.Because these algorithm computation amounts are very big, so need to adopt many DSP method for parallel processing to realize real-time calculating.
Broadband in the signal processor and arrowband mode of operation are controlled it by front controller.
Front controller
Front controller is an embedded processing module, and it directly accepts the various instructions that radar terminal 1 man-machine interface is sent, and is forwarded to other parts of radar front end 2 after the parsing, carries out work with control radar front end 2 by the expection of terminal man-machine interface; In addition, front controller also sends to radar terminal 1 to the result of the working condition of radar front end 2 each parts and signal Processing, makes operator grasp the duty and the target information of radar at any time.Therefore, front controller is the control center of radar front end, requires its working stability reliable, simple and compact for structure, so adopt the embedded processing module to realize.
Power conversion component
Power conversion component is the DC-DC conversion assembly, and it converts the dc voltage of electric battery to supply voltage that each module of radar front end needs.Because Ben Leida adopts the continuous wave system, thus need the output ripple of this assembly very low, otherwise power supply disturbs the operate as normal that will have a strong impact on radar.Secondly, because Ben Leida is a portable set, adopt battery-poweredly, economize on electricity is the important performance requirement of Ben Leida, and therefore, this power conversion component need adopt the high scheme of conversion efficiency.
Among Fig. 1, except radar front end 2, the function that drives The Cloud Terrace 3 is following;
Driving The Cloud Terrace 3 is direct fastenings of radar front end 2, and it accepts the front controller instruction, drives whole radar front end 2 (mainly being antenna) and rotates the target that antenna alignment is surveyed.Simultaneously, it also provides the real-time information of antenna corner through front controller to radar terminal 1, is convenient to terminal 1 and handles.
The workflow of each module of radar front end is roughly following:
Operator can be accomplished controlling the monitoring radar through radar terminal 1.Radar terminal 1 is connected to front controller by LAN cable 6, and front controller is forwarded to other each parts with the front end command analysis again, controls each parts work.After powering on, each parts of front controller control front end are accomplished initialization, wait for the order of controlling at receiving radar terminal 1; After radar terminal 1 is accomplished initialization, wait for that operator sends the radar work order.
Among Fig. 2, front controller to the frequency synthesizer transmitting control commands, is confirmed work wave and synchronous beat that radar adopts, to control other each parts work through cable; In addition, front controller has also been controlled the emissive power of transmitter.Frequency synthesizer provides the emission coherent signal to transmitter, amplifies the back by transmitter power again and is gone out by antenna feed.
Antenna is received radar return; After low noise amplifier amplifies, deliver to the frequency mixer of receiver, the benchmark local oscillation signal mixing that provides with frequency synthesizer; Resulting zero intermediate frequency signals is again through amplification, characteristic filtering, the extraction of windowing; Parallel through arrowband, broadband amplification, the A/D conversion gets into processing and extraction that digital signal processing module carries out echo signal at last.Synchronizing signal and sampled signal that digital signal processing module is required provide by frequency synthesizer.The window Filtering Processing of extraction and broadband, narrow band signal of gain, the frequency that front controller has been controlled receiver through cable is amplified.
Front controller has been controlled the mode of operation of digital signal processing module, realizes detection, tracking, arrowband identification and the imaging identification of target.Front controller also connects and is controlling rotating speed and the corner that drives The Cloud Terrace 3 in addition, obtains the real-time angle of antenna work.
Each parts of radar front end among Fig. 2 in the frame of broken lines are installed in the radar front end 2 among Fig. 1, and radar front end 2 is installed in and drives on the The Cloud Terrace, supports through tripod.Radar terminal is connected to consumer unit 4 through LAN telecommunication cable 6, is transferred to radar front end cable 7 again, inserts radar front end 2.Can see that from Fig. 1 Ben Leida is a kind of portable set, tripod, driving The Cloud Terrace and radar front end etc. all are dismountable, can conveniently carry out work and install, dismantle and transportation.
In addition, the range of application of the utility model is not limited to technology, mechanism, manufacturing, material composition, means, method and the step of the specific embodiment of describing in the instructions.Disclosure from the utility model; Easily understand as those of ordinary skill in the art; For the technology, mechanism, manufacturing, material composition, means, method or the step that have existed or be about to later on develop at present; Wherein they are carried out the corresponding embodiment cardinal principle identical functions of describing with the utility model or obtain identical substantially result, can use them according to the utility model.Therefore, the utility model accompanying claims is intended to these technology, mechanism, manufacturing, material composition, means, method or step are included in its protection domain.
Claims (10)
1. radar is monitored in a portable civilian imaging; It is characterized in that; Comprise radar front end, drive The Cloud Terrace and power supply module, power supply module is electrically connected with radar front end and driving The Cloud Terrace, drives The Cloud Terrace support radar front end and drives radar front end and rotate; Said radar front end comprises antenna, frequency synthesizer, receiver, transmitter, signal processor and front controller, and frequency synthesizer produces the radar emission waveform; The radar emission waveform that transmitter produces frequency synthesizer amplifies the back and is gone out by antenna transmission; The radar return of antenna receiving target reflection also sends to receiver and carries out mixing and amplify; Receiver is sent to signal processor with amplifying signal and handles and form images; Front controller connects and control antenna, frequency synthesizer, receiver, transmitter and signal processor.
2. portable civilian imaging monitoring radar as claimed in claim 1 is characterized in that said antenna comprises emitting antenna, receiving antenna and frame, and emitting antenna and receiving antenna are separately fixed on the frame.
3. portable civilian imaging monitoring radar as claimed in claim 1 is characterized in that said frequency synthesizer is the frequency synthesizer of emission linear frequency modulation continuous wave.
4. portable civilian imaging monitoring radar as claimed in claim 1 is characterized in that said transmitter is that emissive power is the solid state transmitter of 10mW～3W.
5. portable civilian imaging monitoring radar as claimed in claim 1; It is characterized in that; Said receiver comprises that low noise amplifier, frequency mixer, property filter, frequency are windowed and extracts circuit, broad band amplifier and narrow-band amplifier; Low noise amplifier amplifies the radar echo signal that antenna receives; And amplifying signal is sent into frequency mixer carry out getting into after the mixing property filter and filter clutter, frequency is windowed and is extracted narrowband intermediate frequency signal and the Wideband Intermediate Frequency signal after the circuit extraction mixing, respectively by flowing to signal processor after narrow-band amplifier and the broad band amplifier amplification.
6. portable civilian imaging monitoring radar as claimed in claim 1; It is characterized in that; Said signal processor comprises a two-way mould/number conversion module and a digital signal processing module; Two-way mould/number conversion module receives signal that broad band amplifier and narrow-band amplifier carry respectively and is digital signal with conversion of signals, and digital signal processing module detects, locatees and follow the tracks of target according to digital signal and imaging processing is carried out in selected target.
7. portable civilian imaging monitoring radar as claimed in claim 6 is characterized in that said digital signal processing module comprises a polylith DSP and a FPGA, and polylith DSP connects FPGA respectively.
8. a portable civilian imaging monitoring radar system is characterized in that, comprise monitoring radar and radar terminal, radar terminal connects through the LAN cable and control monitoring radar; Said monitoring radar comprises radar front end, drives The Cloud Terrace and power supply module; Power supply module is electrically connected with radar front end and driving The Cloud Terrace; Driving The Cloud Terrace supports radar front end and drives the radar front end rotation; Said radar front end comprises antenna, frequency synthesizer, receiver, transmitter, signal processor and front controller, and frequency synthesizer produces the radar emission waveform; The radar emission waveform that transmitter produces frequency synthesizer amplifies the back and is gone out by antenna transmission; The radar return of antenna receiving target reflection also sends to receiver and carries out mixing and amplify, and receiver is sent to signal processor with amplifying signal and handles and form images; Front controller connects and control antenna, frequency synthesizer, receiver, transmitter and signal processor.
9. portable civilian imaging monitoring radar system as claimed in claim 8 is characterized in that said radar terminal is a computing machine.
10. portable civilian imaging monitoring radar system as claimed in claim 9 is characterized in that having in the said computing machine provides the monitoring of radar man-machine interaction radar control module.
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| CN2011202121996U CN202171644U (en) | 2011-06-22 | 2011-06-22 | Portable civil imaging monitoring radar and radar system |
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| CN2011202121996U CN202171644U (en) | 2011-06-22 | 2011-06-22 | Portable civil imaging monitoring radar and radar system |
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- 2011-06-22 CN CN2011202121996U patent/CN202171644U/en not_active Expired - Fee Related
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